WO1996010615A1

WO1996010615A1 - Controlled cure adhesive film comprising silane and acid grafted polymers

Info

Publication number: WO1996010615A1
Application number: PCT/CA1995/000546
Authority: WO
Inventors: Trevor Curtis Arthurs
Original assignee: Dupont Canada Inc.
Priority date: 1994-09-30
Filing date: 1995-09-26
Publication date: 1996-04-11
Also published as: AU3515595A; GB9419803D0

Abstract

A melt-extrudable cross-linkable adhesive composition is disclosed. The composition is a blend of a silane-modified olefin copolymer and a second component. The second component is a polyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof. The modified olefin copolymer is an olefin copolymer grafted with at least one ehtylenically unsaturated carboxylic acid or anhydride. The ratio of the silane-modified olefin copolymer to the second component is selected such that the composition in the form of a moisture-cured film is melt-bondable to a substrate. Processes and coated substrates are also disclosed. The adhesive is particularly useful in the furniture and automotive industries.

Description

Controlled cure adhesive film comprising sllane and add grafted polymers.

The present invention relates to the lamination of substrates such that the commercially acceptable performance of the laminated substrate is in excess of the temperature at which the adhesive is bonded to the substrates. In particular, the present invention relates to the use of adhesives based on thermoplastic polymers in such lamination. In a number of industries, commercial processes are operated for the lamination of substrates using polyurethane adhesives. In such industries, including the furniture and automotive industries, and others, substrates exemplified by polyvinyl chloride, melamine and phenol formaldehyde-based plastics, foam structures, and cellulosic based structures are laminated to another substrate or to each other to form a product. Such lamination using polyurethane adhesives provides a product with commercially-acceptable properties. However, the use of polyurethane adhesives in lamination processes represents an occupational health risk and major precautions must be taken during operation of the process in order to protect the personnel involved. It would be desirable to have alternate processes that do not use polyurethane adhesives. Moreover, governmental regulations are tending towards requiring that adhesives representing occupational health risks be replaced with less hazardous materials .

In addition, it would be advantageous to the trade to be able to apply an adhesive to a substrate in one location, and then to be able to ship the adhesive-coated substrate to another location for bonding to a second substrate, including the ability to be able to apply the adhesive to the first substrate at a time well before the formation of the laminated structure or at a location far from the location of the lamination step in the process. An adhesive for use in, in particular, the furniture industry is disclosed by T.C. Arthurs in European patent application 0 648 801, published April 19, 1995. The adhesives disclosed therein are based on copolymers of ethylene, alkylacrylates and carbon monoxide, especially in which the polymer has been grafted with an ethylenically unsaturated carboxylic acid or anhydride. While reference is made to cross-linkable adhesives therein, it is stated that such adhesives cannot be applied to the substrate viz. polyvinyl chloride, in one location and exhibit a sufficiently long shelf life to permit shipment to another location and storage for a period of time prior to use.

A cross-linkable adhesive that is capable of being applied at one location and stored for a period of time prior to use and which exhibits commercially acceptable properties at temperatures higher than the temperature of application has now been found. Accordingly, the present invention provides a melt- extrudable cross-linkable adhesive composition comprising a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that the composition in the form of a moisture-cured film is melt- bondable to a substrate.

In preferred embodiments of the composition, the composition is in the form of a film or is a coating on a substrate.

In another aspect, the invention also provides a substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates, said substrate having a coating of a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that said coating is melt bondable to the substrate. In a preferred embodiment of the substrate, the coating has melt flow properties at a temperature of less than lOOoC.

In a further aspect, the invention provides a process comprising coating a substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates, with a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, moisture curing said composition by exposing the composition to water, laminating said coated substrate to a second substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates using a melt bonding process at a temperature of less than the temperature of use of the substrate. In a preferred embodiment of the process, the melt bonding process is conducted at a temperature of less than lOOoC.

In yet another aspect, the invention further provides a laminated structure formed from two substrates, each of said substrates being selected from the group cellulosic substrates, melamine polymer substrates, phenolic polymer substrates, foamed polymeric substrates, said substrates being laminated with an adhesive composition comprising a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that the temperature at which the structure is formed is less than the temperature of failure in at least one of a dead load temperature test or a peel adhesion fail temperature test, as defined herein. In preferred embodiments of the present invention, the blend contains 10-90% by weight of the silane-modified olefin copolymer and a complementary amount of the second componen .

The present invention relates to melt-bondable cross- linked adhesives and to the lamination of substrates. A number of substrates may be used, including polymers based on melamine and phenol e.g. resins made from melamine and formaldehyde and resins made from phenol and formaldehyde, novalac resins, foamed structures and cellulosic structures. The cellulosic structures may be in the form of wood or in the form of fibre board panels, chip board, particle board, plywood and the like. Moreover the cellulosic substrate may be in the form of paper, including kraft paper and kraft paper that has been treated or impregnated with a variety of materials, including phenol formaldehyde resins and the like. The substrate may also be in the form of a foamed material e.g. a foamed poiyolefin and a foamed polyurethane.

The polymer that is modified with the silane and the polymer that is grafted with the ethylenically unsaturated carboxylic acid or anhydride are olefin copolymers . The olefin copolymer used in the silane-modified olefin copolymer and in the second component may be the same or different, but preferably are compatible polymers. The olefin copolymer is selected from copolymers of ethylene with at least one of butene-1, pentene-1, hexene-1, 4-methyl-pentene-1, octene-1 and other mono alpha olefins. In addition, the olefin copolymer may be a copolymer of ethylene with one or more comonomers selected from carbon monoxide, vinyl acetate, alkyl acrylates and alkyl methacrylates, in which the alkyl group has 1-4 carbon atoms e.g. methyl, ethyl, propyl and butyl, including n-butyl and iso-butyl. The melt index, as measured by the procedure of ASTM D1238 (condition E) , should be such that the olefin copolymer is capable of being formed into film or sheet. Examples of the copolymers are ethylene/vinyl acetate copolymers, ethylene/methyl acrylate copolymers, ethylene/ethyl acrylate copolymers, ethylene/butyl acrylate copolymers, ethylene/isobutyl acrylate copolymers, ethylene/vinyl acetate/carbon monoxide copolymers, ethylene/ethyl acrylate/carbon monoxide copolymers, ethylene/butyl acrylate/carbon monoxide copolymers, ethylene/ethyl methacrylate/carbon monoxide copolymers and ethylene/butyl methacrylate/carbon monoxide copolymers. In preferred embodiments of the invention, the olefin copolymer is a copolymer of ethylene, alkyl acrylate and carbon monoxide. The alkyl group of the alkyl acrylate may be methyl, ethyl, propyl and butyl, including n-butyl and iso- butyl . Examples of such olefin copolymers are commercially available e.g. from E.I. du Pont de Nemours and Company of

Wilmington, Delaware U.S.A. Such polymers preferably contain at least 5% by weight of carbon monoxide and at least 15% by weight of the alkyl acrylate. One example of a suitable polymer, as exemplified hereinafter, is the polymer available under the trademark Elvaloy® 441 from E.I. du Pont de Nemours and Company. Such polymer has a melt index of 8 dg/min.

One component of the adhesive composition is a silane- modified olefin copolymer. The olefin copolymer is selected from the polymers given above. The vinyl silane is grafted onto or copolymerized with the olefin copolymer to provide a moisture cross-linkable polymer, as is known in the art. Examples of such vinyl silanes include vinyl trimethoxysiiane and vinyl triethoxysilane. Such silanes are available commercially. Techniques for the grafting of silanes onto olefin copolymers are known. Olefin copolymers containing silane are available commercially, for example, ethylene/vinyl acetate - vinyltrimethoxysilane copolymers are available from AT Plastics of Brampton, Ontario, Canada.

The adhesive composition also includes a second component. The second component is a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof. The olefin copolymer has been defined above with respect to the silane-modified olefin copolymer. The olefin copolymer and the olefin copolymers of the silane-modified olefin copolymer and the modified olefin copolymer may be the same or different, but preferably are compatible.

The modified olefin copolymer is an olefin copolymer, as defined herein, that has been grafted with at least one ethylenically unsaturated carboxylic acid or anhydride. Examples of the olefin copolymer are given above. The ethylenically unsaturated carboxylic acid or anhydride includes, less preferably, derivatives of such acids, and mixtures thereof. Examples of the acids and anhydrides, which may be mono-, di- or polycarboxylic acids, are acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, itaconic anhydride, maleic anhydride, and substituted maleic anhydride, e.g. dimethyl maleic anhydride or citraconic anhydride, nadic anhydride, nadic methyl anhydride, and tetrahydrophthalic anhydride, maleic anhydride being particularly preferred. Examples of the derivatives of the unsaturated acids are salts, amides, imides and esters e.g. mono- and disodium maleate, acrylamide, maleimide, glycidyl methacrylate and dimethyl fumarate. Techniques for the grafting of such monomers onto the olefin copolymer are known e.g. as described in U.S. Patent 4 612 155 of R.A. Zelonka and C.S. Wong, which issued September 16, 1986, and in published European patent application No. 0 369 604 of D.J. Mitchell, published May 23, 1990. The present invention will be particularly described herein with reference to maleic anhydride as the grafting monomer. If the grafted olefin copolymer is used as is i.e. not in the form of a blend with another polymer, then the maleic anhydride content of the grafted olefin copolymer is preferably in the range of about 0.01-0.2% by weight, and typically about 0.03-0.12% by weight. However, as ungrafted olefin copolymer may be used in the second component, as discussed herein, the amount of grafted monomer may be varied from 0% to about 5% by weight. It is also known to use blends of grafted and ungrafted olefin copolymers to order to achieve a desired level of graft in a composition. Other grafting monomers should be used at similar molar concentrations.

The ratio of the silane-modified olefin copolymer to the second component may be varied over a wide range, depending in particular on the molecular weight of the polymers and the amount of silane grafted onto the olefin copolymer. In preferred embodiments, the amount of silane-modified olefin copolymer is 10-90% by weight and especially 30-70% by weight. A complementary amount of the second component is used. Dibutyl tin dilaurate or other cross-linking catalyst may be added to accelerate cross-linking of the composition. Tackifying polymers are generally low melting, low molecular weight materials . Examples of such polymers include polyterpene and other synthetic and naturally occurring resins and rosins, e.g. unmodified or hydrogenated, functionalized or otherwise modified aliphatic, aromatic or heterocyclic materials, including coumarone-indene resins, terpene-phenolic resins, fusable phenolic resins and petroleum hydrocarbon resins. The amount of tackifying polymer may be as specified for the second component.

Examples of fillers that may be used include calcium carbonate, mica and talc. The amount of filler may be as specified for the second component. In the blend, the silane-modified ciefin copolymer and second componen_t should be intimately dispersed together. It is preferred that the silane-modified olefin copolymer and second component be compatible, which may be seen ⁱn mechanical fracture analysis by formation of bonds between the respective polymers such that there is some adherence therebetween and/or by a clear (non-opaque) interface between the polymers. It is particularly preferred that the silane- modified olefin copolymer and second component be miscⁱble with each other.

The adhesive may be used in a variety of end-uses. For instance, the adhesive may be used in the furniture lamination industry to adhere decorative laminations to metal or wood. The adhesive may also be used in automotive interiors to adhere foam substrates to rigid substrates e.g. ABS polymers or polypropylene, or to laminate foam substrates to the same or different foam substrates e.g. as in headliners and car seat constructions.

The adhesive may be applied to one substrate and then cured using moisture. The moisture may be moisture in the atmosphere or the moisture may be applied to the coated substrate e.g. by treating with steam, as in known for moisture-curable silane compositions. Subsequently, the second substrate is applied, which could occur at the same location as the initial coating or at some other location, and days or weeks after application to the first substrate. The adhesive would normally be applied to the first substrate by extrusion coating. However, the adhesive could be formed as a film or sheet in the absence of a substrate and allowed to cure, and then used to laminate two substrates together. The adhesive could also be part of a multi-layer co-extrusion in which it is the outer layer and allowed to cure before being applied to another substrate.

The present invention provides the ability to apply an adhesive composition at one temperature but achieve acceptable performance at a higher temperature, and to do so using an adhesive that is based on thermoplastic polymers. In embodiments, the adhesive composition is applied at a temperature of greater than 60oc, and especially less than lOOc-c, and has a temperature of use that exceeds lOOoC. As used herein, the dead drop temperature test is according to the procedure of ASTM D4498 "Heat-Fail

Temperature in Shear of Hot-melt Adhesives", but revised by use of a 3400g weight instead of a 450g weight and the cross- section of the lap bond used in the test is increased to 4 sq.in. Unless specified to the contrary, the dead drop temperature test was performed on the laminates on the same day that they were formed.

A further test, as used herein, is the peel adhesion fail temperature test (PAFT) . This test is similar to the heat fail temperature test described above, except that it measures the resistance to peel. The weight used to conduct the test is 100 grams, and the bonded surface is 2.5 cm by 2.5 cm. In the test, one of the substrates is peeled away from the other at an angle between 90° and 180°, while the oven temperature is raised by 10oc every 10 minutes until a failure of the bond occurs.

The present invention is illustrated by the following examples.

EXAMPLE I A series of compositions were prepared from a silane- modified olefin copolymer and a modified olefin copolymer, by melt blending at 130oC in melt extrusion apparatus. Details of the compositions used are given below.

The blended compositions were extruded in the form of a film, which was then cured with moisture. The resultant film was used to laminate a kraft paper that had been coated with phenol formaldehyde resin to a medium density fibre board. The lamination was done at 100°C in a press using a pressure of 5psi for a period of five minutes.

The adhesion of the two substrates was tested using the dead load test described above. Further details are given in Table I. TABLE I

Run Silane Modified Cure Method Dead load No. Polymer* Polymer** Temperature

(%) (%) (°C)

1 100 0 none 70

2 70 30 24 hrs/ 79

65oC water

3 40 60 24 hrs/ >140

65°C water

4 40 60 1 week/ 79 ambient

5 40 60 2 weeks/ 79 ambient

6 40 60 4 weeks/ 95 ambient

7 40 60 6 weeks/ >190 ambient

* Elvaloy^® HP 441 copolymer ethylene/n-butyl acrylate/carbon monoxide copolymer containing 30% by weight of n-butyl acrylate and 10% by weight of carbon monoxide) , grafted with 1.9% of a mixture of 96 parts of vinyltrimethoxysilane and 4 parts of Lupersol^® 101, with the melt index after grafting being 8 dg/min.

** Fusabond^® 175D modified olefin copolymer (maleic anhydride- grafted Elvaloy^® HP 441, contains 1% of grafted maleic anhydride and has a melt index of 4-6 dg/min) .

Note Run 1 is a control run i.e. it is not a run of the invention

The results showed that a dramatic increase in the resistance to the temperature at which the adhesive bond fails, as measured by dead load temperature test, is obtained. For example, Run 7 shows that the dead load temperature increased from the 70°c obtained in the control run (Run 1⁾ to greater than 190oc.

EXAMPLE II

The procedure of Example I was repeated using polyester foam and rigid ABS polymer as the substrates. The adhesive film was initially pressed into the polyester foam and allowed to cure, before being laminated by melt pressing to the ABS substrate. The adhesion was measured in a 180o peel adhesion failure temperature test.

In Run 8, a composition formed from 60% by weight of silane-modified Elvaloy® HP 771 polymer, 35% by weight of modified polymer (Fusabond® 175D) and 5% by weight of the ungrafted polymer containing 5000 ppm of dibutyl tin dilaurate was subjected to the 180° peel adhesion failure temperature test without allowing the substrate to cure. A temperature of 8O0C was obtained. The same composition in which the adhesive composition was allowed to cure for a period of five days at 70oc under 100% relative humidity conditions gave a temperature of 103oc in the 180° peel adhesion failure temperature test.

Elvaloy^® HP 771 is ethylene/n-butyl acrylate/carbon monoxide copolymer that contains 27% by weight of n-butyl acrylate and 10% by weight of carbon monoxide. It was grafted with 1.9% of a mixture of 96 parts of vinyltrimethoxysilane and 4 parts of Lupersol^® 101. The melt index after grafting was 40 dg/min. Example III

Using the procedure of Examples I and II, a series of compositions were prepared from silane-modified olefin copolymer and a grafted olefin copolymer, by melt blending at 130°C in melt extrusion apparatus. Details of the compositions are given below in Table II. In addition to the components shown in Table II, each composition also contained 5% by weight of (ungrafted) olefin copolymer, corresponding to the olefin copolymer that was grafted, that contained 5000 ppm of dibutyl tin dilaurate. The blended compositions were extruded in the form of a film which was laminated to (i) kraft paper that had been coated with phenol formaldehyde resin, and (ii) to aluminum foil. The aluminum foil was 7.5 mil thick. The resultant laminates were then cured in 100% RH (relative humidity⁾ atmosphere for 2 weeks at 23°C. Following the cure of the adhesive, the kraft paper/phenol formaldehyde/adhesive structure was laminated to medium density fiber board using a press at 100°C, 2000 ps for 5 minutes. The aluminum/adhesive structure was laminated to another aluminum foil of the same thickness using a press at 100°C, 2000 psi for 1 minute.

Dead load temperature tests were performed on the kraft paper/phenol formaldehyde/adhesive/medium density fiber board structures. PAFT tests were performed on the aluminum/adhesive/aluminum structures .

The results are listed in Table II below:

TABLE II

Run Silane Grafted Dead Load PAFT No. Polymer+ Polymer++ Temperature (%) (%) CO (°C)

9 95 0 no a<ihesion no adhesion

10 76 19 89 66

11 57 38 108 73

12 38 57 188 86

13 19 76 110 140

14 0 95 101 124

+ Elvax^® 260 copolymer (E.I. du Pont de Nemours and Company⁾ of ethylene/vinyl acetate (containing 28% of vinyl acetate⁾ grafted with 1.9% of a mixture of 96 parts of vinyltrimethoxysilane and 4 parts of Lupersol^® 101, with melt index after grafting being 4 dg/min.

++ Elvax® 260 copolymer of ethylene/vinyl acetate (containing 28% of vinyl acetate) grafted with maleic anhydride, with melt index after grafting being 2.8 dg/min.

The results show a dramatic increase in the resistance to the temperature at which the adhesive bond fails, over a wide range of compositions.

Example IV Using the procedure of Example III, a series of compositions were prepared from silane-modified olefin copolymer and a modified olefin copolymer, by melt blending at 130°C in melt extrusion apparatus. Details of the compositions are given celow. In addition to the components shown in Table II, each composition also contained 5% by weight of (ungrafted) olefin copolymer, corresponding to the olefin copolymer that was grafted, that contained 5000 ppm of dibutyl tin dilaurate. The same sample preparations and tests as in Example III were conducted.

The results are listed in Table III below:

TABLE III

Run Silane Modified Dead Load PAFT No. Polymer Polymer++ Temperature

(%) (%) (°C) (°C)

15 95 0 no a<ihesion no adhesion

16 76 19 70 no adhesion

17 57 38 82 79

18 38 57 81 77

19 19 76 104 106

20 0 95 85 99

+ Elvax^® 240 copolymer (E.I. du Pont de Nemours and Company) of ethylene/vinyl acetate (containing 28% of vinyl acetate) grafted with 1.9% of a mixture of 96 parts of vinyltrimethoxysilane and 4 parts of Lupersol^® 101, with melt index after grafting being 25 dg/min.

++ Elvax^® 240 copolymer of ethylene/vinyl acetate (containing 28% of vinyl acetate) grafted with maleic anhydride, with melt index after grafting being 22 dg/min.

The results show an increase in the resistance to the temperature at which the adhesive bond fails.

Example V Using the procedures of Examples III and IV, a series of compositions were prepared from silane-modified olefin copolymer and a modified olefin copolymer, by melt blending at 130°C in melt extrusion apparatus. The same sample preparations and tests were conducted. Details of the compositions and the results obtained are given below in Table IV. In addition to the component shown in Table II, each composition also contained 5% by weight of (ungrafted) olefin copolymer, corresponding to the olefin copolymer that was grafted, that contained 5000 ppm of dibutyl tin dilaurate.

TABLE IV

Run Silane Modified Dead Load PAFT No. Polymer÷ Polyτner++ Temperature

(%) (%) (°C) (°C)

21 95 0 70 no adhesion

22 76 19 145 92

23 57 38 145 109

24 38 57 114 100

25 19 76 99 148

26 0 95 97 127

+ Opte a^® TC-120 copolymer (EXXON) of ethylene/methyl acrylate (containing 21% of methyl acrylate) grafted with 1.9% of a mixture of 96 parts of vinyltrimethoxysilane and 4 parts of Lupersol^® 101, with melt index after grafting being 4 dg/min.

++ Optema^® TC-120 copolymer of ethylene/methyl acrylate (containing 21% of methyl acrylate) grafted with maleic anhydride, with melt index after grafting being 5 dg/min.

The results show a dramatic increase in the resistance to the temperature at which the adhesive bond fails.

Claims

CLAIMS :

1. A melt-extrudable cross-linkable adhesive composition comprising a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that the composition in the form of a moisture-cured film is melt- bondable to a substrate and said olefin of the olefin copolymer being ethylene.

2. The composition of Claim 1 in which the composition is in the form of a film or is a coating on a substrate.

3. The composition of Claim 1 or Claim 2 in which the blend contains 10-90% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.

4. The composition of Claim 3 in which the blend contains 30-70% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.

5. The composition of any one of Claims 1-4 in which the silane is vinyl trimethoxysilane or vinyl triethoxysilane.

6. The composition of any one of Claims 1-5 in which the ethylenically unsaturated carboxylic acid or anhydride is maleic anhydride.

7. The composition of any one of Claims 1-6 in which the silane-modified olefin copolymer and second component are compatible.

8. The composition of Claim 7 in which the silane- modified olefin copolymer and second component are miscible.

9. A substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates, said substrate having a coating of a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that said coating is melt bondable to the substrate and said olefin of the olefin copolymer being ethylene.

10. The substrate of Claim 9 in which the coating has melt flow properties at a temperature of less than lOOoC.

11. The substrate of Claim 9 or Claim 10 in which the blend contains 10-90% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.

12. The substrate of Claim 11 in which the blend contains 30-70% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.

13. The substrate of any one of Claims 9-12 in which the silane is vinyl trimethoxysilane or vinyl triethoxysilane.

14. The substrate of any one of Claims 9-13 in which the ethylenically unsaturated carboxylic acid or anhydride is maleic anhydride.

15. The substrate of any one of Claims 9-14 in which the silane-modified olefin copolymer and second component are compatible.

16. The substrate of Claim 15 in which the silane- modified olefin copolymer and second component are miscible.

17. A process comprising coating a substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates, with a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, and said olefin of the olefin copolymer being ethylene, moisture curing said composition by exposing the composition to water, laminating said coated substrate to a second substrate selected from cellulosic substrates, melamine polymer substrates, phenolic polymer substrates and foamed polymeric substrates using a melt bonding process at a temperature of less than the temperature of use of the substrate.

18. The process of Claim 17 in which the melt bonding process is conducted at a temperature of less than lOOoC.

19. The process of Claim 17 in which the adhesive composition is applied at a temperature between 60oc and lOOoC

20. The process of any one of Claims 17-19 in which the blend contains 10-90% by weight of the silane-modified olefin copolymer and a complementary amount of the second component .

21. The process of Claim 20 in which the blend contains 30-70% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.

22. The process of any one of Claims 17-21 in which the silane is vinyl tri ethoxysilane or vinyl triethoxysilane.

23. The process of any one of Claims 17-22 in which the ethylenically unsaturated carboxylic acid or anhydride is maleic anhydride.

24. The process of any one of Claims 17-23 in which the silane-modified olefin copolylmer and second component are compatible.

25. The process of Claim 24 in which the silane-modified olefin copolylmer and second component are miscible.

26. A laminated structure formed from two substrates, each of said substrates being selected from the group cellulosic substrates, melamine polymer substrates, phenolic polymer substrates, foamed polymeric substrates, said substrates being laminated with an adhesive composition comprising a blend of a silane-modified olefin copolymer and a second component, said second component being a poiyolefin selected from olefin copolymer, modified olefin copolymer, olefin copolymer and at least one of tackifying polymer and filler, modified olefin copolymer and at least one of tackifying polymer and filler, and combinations thereof, said modified olefin copolymer being a olefin copolymer grafted with at least one ethylenically unsaturated carboxylic acid or anhydride, the ratio of the silane-modified olefin copolymer to the second component being selected such that the temperature at which the structure is formed is less than the temperature of failure in at least one of a dead load temperature test or a peel adhesion fail temperature test, as defined herein, and said olefin of the olefin copolymer being ethylene.

27. The laminated structure of Claim 26 in which the blend contains 10-90% by weight of the silane-modified olefin copolymer and a complementary amount of the second component.